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A176702 Triangle T(n,k) read by rows. A051731(n,k)-A051731(n,k+1). 3
1, 0, 1, 1, -1, 1, 0, 1, -1, 1, 1, 0, 0, -1, 1, 0, 0, 1, 0, -1, 1, 1, 0, 0, 0, 0, -1, 1, 0, 1, -1, 1, 0, 0, -1, 1, 1, -1, 1, 0, 0, 0, 0, -1, 1, 0, 1, 0, -1, 1, 0, 0, 0, -1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 0, 0, 1, -1, 1, 0, 0, 0, 0, -1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, -1, 1, 0, 1, 0, 0, 0, -1 (list; table; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Matrix inverse of A134541.

The subsequence of A180430 beginning from the second column, divided by 2, equals this sequence. [From Mats Granvik, Sep 04 2010]

LINKS

Table of n, a(n) for n=1..97.

EXAMPLE

Triangle begins:

1

0...1

1..-1...1

0...1..-1...1

1...0...0..-1...1

0...0...1...0..-1...1

1...0...0...0...0..-1...1

0...1..-1...1...0...0..-1...1

1..-1...1...0...0...0...0..-1...1

0...1...0..-1...1...0...0...0..-1...1

1...0...0...0...0...0...0...0...0..-1...1

0...0...0...1..-1...1...0...0...0...0..-1...1

CROSSREFS

Cf. A176702*A000012=A051731. Row sums equals A000012.

Sequence in context: A103582 A129565 A121967 * A275694 A153860 A162519

Adjacent sequences:  A176699 A176700 A176701 * A176703 A176704 A176705

KEYWORD

sign,tabl

AUTHOR

Mats Granvik, Gary W. Adamson, Apr 24 2010

STATUS

approved

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Last modified March 22 22:17 EDT 2017. Contains 283901 sequences.